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The remarkable first two seasons of “The Leftovers,” HBO’s exploration of grief in the wake of a global rapture, forged a reputation for tackling a litany of heavy topics — religion, depression, cult-enforced chain smoking, existential trips to the afterlife, bad karaoke singing and, more broadly, the meaning of life itself. Needless to say, smiling and laughter weren’t often on the table.

So it’s a bit unnerving to see a fair amount of both in the premiere of the show’s third and final season, beginning 9 p.m. Sunday.… Read More »